GHSA-r6h2-5gqq-v5v6 OpenClaw: Reject symlinks in local skill packaging script

• npm openclaw: < 2026.2.19 → fixed in 2026.2.19

Vulnerability `skills/skill-creator/scripts/package_skill.py` (a local helper script used when authors package skills) previously followed symlinks while building `.skill` archives. If an author runs this script on a crafted local skill directory containing symlinks to files outside the skill root, the resulting archive can include unintended file contents. Severity and Exposure • Severity: Low • Execution context: local/manual workflow only (skill author packaging step) • No remote trigger: this is not reachable via normal OpenClaw gateway/chat runtime paths • No extraction Zip Slip in this finding: this issue is limited to packaging-time symlink following Impact • Potential unintentional disclosure of local files from the packaging machine into a generated `.skill` artifact. • Requires local execution of the packaging script on attacker-controlled skill contents. Affected Components • `skills/skill-creator/scripts/package_skill.py` Affected Packages / Versions • Package: `openclaw` (npm) • Latest published version during triage: `2026.2.17` • Vulnerable version range: `<= 2026.2.17` • Planned patched version (next release): `2026.2.18` Remediation • Reject symlinks during skill packaging. • Add regression tests for symlink file and symlink directory cases. • Update packaging guidance to document the symlink restriction. Fix Commit(s) • `c275932aa4230fb7a8212fe1b9d2a18424874b3f` • `ee1d6427b544ccadd73e02b1630ea5c29ba9a9f0` Related PR • https://github.com/openclaw/openclaw/pull/20796 Release Process Note `patched_versions` is pre-set to the planned next release (`2026.2.18`). Once npm `[email protected]` is published, this advisory is ready to publish without additional edits. Thanks @aether-ai-agent for reporting.